<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 2、准备echarts实例挂载dom -->
      <div id="main" style="width: 750px; height: 400px"></div>
    </el-card>
  </div>
</template>

<script>
/* 1、导入echarts */
import * as echarts from 'echarts'
import _ from 'loadsh'

export default {
  data() {
    return {
      options: {
        title: {
          text: '用户来源',
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3',
            },
          },
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true,
        },
        xAxis: [
          {
            boundaryGap: false,
          },
        ],
        yAxis: [
          {
            type: 'value',
          },
        ],
      },
    }
  },
  async mounted() {
    /* 3、基于准备好的dom，初始化echarts实例 */
    const myChart = echarts.init(document.getElementById('main'))
    /* 4、指定图标的配置项和数据 */
    const { data: res } = await this.$http.get('reports/type/1')
     // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取数据失败！')
      }   
    const result = _.merge(this.options, res.data)
    /* 5、使用2的配置项和数据显示图表 */
    myChart.setOption(result)
  }
}
</script>

<style lang="less" scoped>
</style>